deb-heat/heat/tests/test_nested_stack.py
Zane Bitter a9e7278d00 Update nested stacks in parallel
This parallelises updates for AWS::CloudFormation::Stack resources, but not
for autoscaling groups. Other types of nested stacks (the old LoadBalancer
and DBInstance resources, and provider templates) have not yet implemented
stack updates.

Change-Id: I86e1d5289487b34712c248bc5e68e62cc4651ec6
2013-09-04 10:44:43 +02:00

361 lines
11 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import copy
from heat.common import exception
from heat.common import template_format
from heat.common import urlfetch
from heat.db import api as db_api
from heat.engine import parser
from heat.engine import resource
from heat.engine import scheduler
from heat.tests import generic_resource as generic_rsrc
from heat.tests import utils
from heat.tests.common import HeatTestCase
class NestedStackTest(HeatTestCase):
test_template = '''
HeatTemplateFormatVersion: '2012-12-12'
Resources:
the_nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: https://server.test/the.template
Parameters:
KeyName: foo
'''
nested_template = '''
HeatTemplateFormatVersion: '2012-12-12'
Parameters:
KeyName:
Type: String
Outputs:
Foo:
Value: bar
'''
update_template = '''
HeatTemplateFormatVersion: '2012-12-12'
Parameters:
KeyName:
Type: String
Outputs:
Bar:
Value: foo
'''
def setUp(self):
super(NestedStackTest, self).setUp()
self.m.StubOutWithMock(urlfetch, 'get')
utils.setup_dummy_db()
def create_stack(self, template):
t = template_format.parse(template)
stack = self.parse_stack(t)
stack.create()
self.assertEqual(stack.state, (stack.CREATE, stack.COMPLETE))
return stack
def parse_stack(self, t):
ctx = utils.dummy_context('test_username', 'aaaa', 'password')
stack_name = 'test_stack'
tmpl = parser.Template(t)
stack = parser.Stack(ctx, stack_name, tmpl)
stack.store()
return stack
def test_nested_stack_create(self):
urlfetch.get('https://server.test/the.template').MultipleTimes().\
AndReturn(self.nested_template)
self.m.ReplayAll()
stack = self.create_stack(self.test_template)
rsrc = stack['the_nested']
nested_name = utils.PhysName(stack.name, 'the_nested')
self.assertEqual(nested_name, rsrc.physical_resource_name())
arn_prefix = ('arn:openstack:heat::aaaa:stacks/%s/' %
rsrc.physical_resource_name())
self.assertTrue(rsrc.FnGetRefId().startswith(arn_prefix))
self.assertEqual('bar', rsrc.FnGetAtt('Outputs.Foo'))
self.assertRaises(
exception.InvalidTemplateAttribute, rsrc.FnGetAtt, 'Foo')
self.assertRaises(
exception.InvalidTemplateAttribute, rsrc.FnGetAtt, 'Outputs.Bar')
self.assertRaises(
exception.InvalidTemplateAttribute, rsrc.FnGetAtt, 'Bar')
rsrc.delete()
self.assertTrue(rsrc.FnGetRefId().startswith(arn_prefix))
self.m.VerifyAll()
def test_nested_stack_update(self):
urlfetch.get('https://server.test/the.template').MultipleTimes().\
AndReturn(self.nested_template)
urlfetch.get('https://server.test/new.template').MultipleTimes().\
AndReturn(self.update_template)
self.m.ReplayAll()
stack = self.create_stack(self.test_template)
rsrc = stack['the_nested']
original_nested_id = rsrc.resource_id
t = template_format.parse(self.test_template)
new_res = copy.deepcopy(t['Resources']['the_nested'])
new_res['Properties']['TemplateURL'] = (
'https://server.test/new.template')
prop_diff = {'TemplateURL': 'https://server.test/new.template'}
updater = rsrc.handle_update(new_res, {}, prop_diff)
updater.run_to_completion()
self.assertEqual(True, rsrc.check_update_complete(updater))
# Expect the physical resource name staying the same after update,
# so that the nested was actually updated instead of replaced.
self.assertEqual(original_nested_id, rsrc.resource_id)
db_nested = db_api.stack_get(stack.context,
rsrc.resource_id)
# Owner_id should be preserved during the update process.
self.assertEqual(stack.id, db_nested.owner_id)
self.assertEqual('foo', rsrc.FnGetAtt('Outputs.Bar'))
self.assertRaises(
exception.InvalidTemplateAttribute, rsrc.FnGetAtt, 'Foo')
self.assertRaises(
exception.InvalidTemplateAttribute, rsrc.FnGetAtt, 'Outputs.Foo')
self.assertRaises(
exception.InvalidTemplateAttribute, rsrc.FnGetAtt, 'Bar')
rsrc.delete()
self.m.VerifyAll()
def test_nested_stack_suspend_resume(self):
urlfetch.get('https://server.test/the.template').AndReturn(
self.nested_template)
self.m.ReplayAll()
stack = self.create_stack(self.test_template)
rsrc = stack['the_nested']
scheduler.TaskRunner(rsrc.suspend)()
self.assertEqual(rsrc.state, (rsrc.SUSPEND, rsrc.COMPLETE))
scheduler.TaskRunner(rsrc.resume)()
self.assertEqual(rsrc.state, (rsrc.RESUME, rsrc.COMPLETE))
rsrc.delete()
self.m.VerifyAll()
def test_nested_stack_three_deep(self):
root_template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth1.template'
'''
depth1_template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth2.template'
'''
depth2_template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth3.template'
Parameters:
KeyName: foo
'''
urlfetch.get(
'https://server.test/depth1.template').AndReturn(
depth1_template)
urlfetch.get(
'https://server.test/depth2.template').AndReturn(
depth2_template)
urlfetch.get(
'https://server.test/depth3.template').AndReturn(
self.nested_template)
self.m.ReplayAll()
self.create_stack(root_template)
self.m.VerifyAll()
def test_nested_stack_four_deep(self):
root_template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth1.template'
'''
depth1_template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth2.template'
'''
depth2_template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth3.template'
'''
depth3_template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth4.template'
Parameters:
KeyName: foo
'''
urlfetch.get(
'https://server.test/depth1.template').AndReturn(
depth1_template)
urlfetch.get(
'https://server.test/depth2.template').AndReturn(
depth2_template)
urlfetch.get(
'https://server.test/depth3.template').AndReturn(
depth3_template)
urlfetch.get(
'https://server.test/depth4.template').AndReturn(
self.nested_template)
self.m.ReplayAll()
t = template_format.parse(root_template)
stack = self.parse_stack(t)
stack.create()
self.assertEquals((stack.CREATE, stack.FAILED), stack.state)
self.assertIn('Recursion depth exceeds', stack.status_reason)
self.m.VerifyAll()
def test_nested_stack_four_wide(self):
root_template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth1.template'
Parameters:
KeyName: foo
Nested2:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth2.template'
Parameters:
KeyName: foo
Nested3:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth3.template'
Parameters:
KeyName: foo
Nested4:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/depth4.template'
Parameters:
KeyName: foo
'''
urlfetch.get(
'https://server.test/depth1.template').InAnyOrder().AndReturn(
self.nested_template)
urlfetch.get(
'https://server.test/depth2.template').InAnyOrder().AndReturn(
self.nested_template)
urlfetch.get(
'https://server.test/depth3.template').InAnyOrder().AndReturn(
self.nested_template)
urlfetch.get(
'https://server.test/depth4.template').InAnyOrder().AndReturn(
self.nested_template)
self.m.ReplayAll()
self.create_stack(root_template)
self.m.VerifyAll()
def test_nested_stack_infinite_recursion(self):
template = '''
HeatTemplateFormat: 2012-12-12
Resources:
Nested:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: 'https://server.test/the.template'
'''
urlfetch.get(
'https://server.test/the.template').MultipleTimes().AndReturn(
template)
self.m.ReplayAll()
t = template_format.parse(template)
stack = self.parse_stack(t)
stack.create()
self.assertEqual(stack.state, (stack.CREATE, stack.FAILED))
self.assertIn('Recursion depth exceeds', stack.status_reason)
self.m.VerifyAll()
class ResDataResource(generic_rsrc.GenericResource):
def handle_create(self):
db_api.resource_data_set(self, "test", 'A secret value', True)
class ResDataNestedStackTest(NestedStackTest):
nested_template = '''
HeatTemplateFormatVersion: "2012-12-12"
Parameters:
KeyName:
Type: String
Resources:
nested_res:
Type: "res.data.resource"
Outputs:
Foo:
Value: bar
'''
def setUp(self):
resource._register_class("res.data.resource", ResDataResource)
super(ResDataNestedStackTest, self).setUp()
def test_res_data_delete(self):
urlfetch.get('https://server.test/the.template').AndReturn(
self.nested_template)
self.m.ReplayAll()
stack = self.create_stack(self.test_template)
res = stack['the_nested'].nested()['nested_res']
stack.delete()
self.assertEqual(stack.state, (stack.DELETE, stack.COMPLETE))
self.assertRaises(exception.NotFound, db_api.resource_data_get, res,
'test')